import { ChatOpenAI, OpenAIEmbeddings } from “@langchain/openai”; import { formatDocumentsAsString } from “langchain/util/document”; import { PromptTemplate } from “@langchain/core/prompts”; import { RunnableSequence, RunnablePassthrough, } from “@langchain/core/runnables”; import { StringOutputParser } from “@langchain/core/output_parsers”; import { PineconeStore } from “@langchain/pinecone”; import { Pinecone } from ‘@pinecone-database/pinecone’; export default async function langchain() { const model = new ChatOpenAI({ […]